The VU Activity Chart shows the activity of every VU associated with the load test. It allows visualizing the VU activity and how it relates to other VUs actions. Specifically, it shows which test case and iteration each VU was executing, on which load generator it was emulated and what other VUs were running simultaneously. Because this information is depicted on the timeline, it helps isolate performance issues by seeing how load patterns and test case concurrences correlate with slower test iterations. You can further drill down every test iteration to display a waterfall chart corresponding to this iteration, which displays activity detailed on the level of individual pages and requests.

Info: The VU Activity Chart is available only after the load has finished running.

An example of a VU Activity chart is provided above: 

Generating Test Iteration Waterfall

Export iteration data

Other Commands:

Iteration summary:

When zooming the activity view, the bottom area will show iteration summary information for the zoomed range.

If the test stopped before an iteration was completed, this iteration would count as a Full iteration if it falls into the entire zoomed range.

Filter by agent

If a load test runs used more than one load agent, then the activity diagram can be filtered to show activity per load agent.

To display the Activity Chart for one load agent, select it from the drop-down in the toolbar. By default, All is selected and displays activity for all load agents.

The iteration summary will also be filtered to show calculations only for the selected load agent when filtering by agent. Also, the export feature will only export the data for the selected.